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MAX757CSA

Manufacturer: MAX, MAXIM, MAXIM

3.3V/5V/Adjustable-Output, Step-Up DC-DC Converters

Partnumber Manufacturer Quantity Availability
MAX757CSA MAX, MAXIM, MAXIM 1123 In Stock

Description and Introduction

3.3V/5V/Adjustable-Output, Step-Up DC-DC Converters The MAX757CSA is a step-up (boost) DC-DC converter manufactured by Maxim Integrated (now part of Analog Devices). Below are its key specifications, descriptions, and features:

### **Specifications:**  
- **Input Voltage Range:** 0.7V to 5.5V  
- **Output Voltage:** Adjustable from 2.7V to 5.5V (fixed 5V version also available)  
- **Output Current:** Up to 300mA (depending on input voltage and output settings)  
- **Switching Frequency:** 500kHz  
- **Efficiency:** Up to 94%  
- **Operating Temperature Range:** 0°C to +70°C  
- **Package:** 8-pin SOIC (CSA suffix)  

### **Descriptions:**  
The MAX757CSA is a high-efficiency, low-power, step-up DC-DC converter designed for battery-powered applications. It is optimized for low input voltages, making it suitable for single-cell or dual-cell battery systems. The device includes an internal N-channel MOSFET switch and requires minimal external components.  

### **Features:**  
- **Low Start-Up Voltage:** Operates down to 0.7V input.  
- **Adjustable/Fixed Output:** Supports adjustable output (via external resistors) or fixed 5V output.  
- **High Efficiency:** Up to 94% conversion efficiency.  
- **Low Quiescent Current:** Typically 110µA.  
- **Internal MOSFET Switch:** Simplifies design and reduces external component count.  
- **Short-Circuit Protection:** Includes current limiting for added reliability.  
- **Small Footprint:** Available in an 8-pin SOIC package.  

The MAX757CSA is commonly used in portable electronics, battery-powered devices, and low-voltage power supply applications.

Application Scenarios & Design Considerations

3.3V/5V/Adjustable-Output, Step-Up DC-DC Converters

Alternative Part Number

  • LT1302CS8 --: Adjustable step-up DC-DC converter in an 8-pin SOIC package with comparable input voltage range and switching frequency, suitable as a functional replacement for boost regulator designs.
  • MC34063ACD --: Widely available general-purpose DC-DC converter IC in SOIC-8 that can be configured as a step-up regulator, offering a low-cost and well-documented alternative.
  • LM2700MT-ADJ --: Adjustable boost converter in a small package with similar boost topology and current capability, usable as an alternative with minor external component adjustments.
  • LT1073CS8 --: Adjustable step-up DC-DC converter in an 8-pin SOIC package with similar input voltage range and switching architecture, widely used as a MAX757 drop-in functional equivalent.
  • LM2577S-ADJ --: Adjustable boost converter in a surface-mount package with higher current capability, usable as an alternative when board space allows and the higher switch current is acceptable.

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